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Elster BK-G25 Diaphragm Gas Meter

  • Compact commercial diaphragm gas meters
  • Natural gas, town gas, propane, butane, air and inert gases
  • Flows from 0.25 m3/h up to 40 m3/h
  • Cyclic volume up to 12 litres

The Elster BK-G25 and BK-G25T are high quality compact commercial diaphragm gas meters for use with natural gas, town gas, propane, butane, air and inert gases. The compact commercial diaphragm gas meter BK-G10 and BK-G16 meet the highest demands with respect to accuracy of measurement and safety.

The BK-G25 has been designed for use with flows from 0.25 m3/h up to 40 m3/h with a maximum operating pressure of 0.5 bar.

The stroke of the diaphragms is pneumatically stopped and therefore ensures both low bearing loads and a quiet operation.
The synthetic diaphragm, moulded in stadium shape, and the measuring chambers used, ensure precise and stable measurement, including at minimum flow.
The diaphragm assembled and calibrated pneumatically, ensure a low load loss and minimum noise. The design, the materials and its components ensure the highest standard of quality of the device.

The gas source must always be installed on the left side or inlet side of the meter and is available with either a 280mm or 335mm distance between connection centres.
Threaded connections available include 2”, 2 ½” or 4 x M10.

The BK-G25 and BK-G25T are both MID approved, as well as Fire resistant (HTB) up to 0.1 bar according to EN 1359.

Standard temperature ranges are from-10 °C to +40 °C.

The temperature compensation facility of the BK-G25T ensures via a bimetallic element that the stroke of the diaphragms is adapted to the current gas temperature.


  • MID Gas metering
  • Commercial Gas Metering
  • Gas Industry

Other features

Compatible with the IN-Z61 Low Frequency pulse output

Elster BK-G25 Diaphragm Gas Meter Elster BK-G Family Diaphragm Gas Meter

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